Chuck-operating mechanism



J E BAINES E1 AL CHUCK OPERATING MECHANISM Flled Sept 25, 1926 4 Sheets-Sheet l fiweiz'or JQ5EPH E; 54/NE5 4,74 JflCOB R 50545.

July 10, 19283.;

Witnesses.

4 Sheets-Sheet 2 UMWN J. E. BAINES ET AL CHUCK OPERATING MECHANI-SM Filed se t.23, 1926 172062705079.- .fo pfi E. 54/A/55' m4 .f4c05 R. 50545.

July 10, 1928. 1,676,8i4

J. E. BAINES ET AL CHUCK OPERATING MECHANISM July 10, 1928.

J. E. BA INES ET AL CHUCK QPERATING MECHANISM 4 SheetsSheet Filed Sept. 23, 1926 Vefnesses .4 MW 3 W T n2 ee m m5 5 Z 5 we ported a housing 3.

Patented July 10, 1928.

JOSEPH Remains, O1 PITTSBUIRGHQAND JACOB '1. Basra; on'm'ounr lameness.

YL A GN B 0 NATI AL TUBEGOMPANVY, or :rrrrsnunengrnnivsyn v VANIA, A CDRPORATION OF NEW JERSEY, l

cures-creature MECHANISM,

Application filed September 23,1928, Seria1 1To.'f13"71,280.I i

I This invention relates to chucks and more particularly to chucks such as used on pipeworkinginachines and the l1ke,'an'd has tor its object the provision of a devlce of this character which while in motion maybe caused to grip or release the work w thout the, necessity of stoppingthe machine to which the rhucl-z is applied.

Another object is to provide a means, controllable vfrom a point remote from the chuck, for operating the chuck to causeit to grip and release the work.

A further object is to provide a chuck having the novel combination, design and construction of parts hereinafter described and illustrated in the accompanyingdrawing's. v

In the drawings:

. Figure l. is'a partialside elevation olia pipe-working machine ven' bodylng this 111- vention.

Figure 2 is a rear end elevation thereof.

- ,l ieferring more particularly to the drawings, the numeral 2 designates 'the base of the machine as a whole, on wh ch s sup- A barrel 41s ournaled j in the housing and is provided intermediate its ends with an external worrn wheel ,5 which in mesh with a worm 6 on a shaft 7 journaled in the housing 3. A motori8 dis mounted on an adjustablemotorbase ,9

con thetop of the housing and is connected to the, shaft 7 by a chain or beltlO trained over sprockets 11 and 12 on the inotor arma ture shaft 13 and the drive-shaft 7,,respectively, i h The above described machine is of common and well-known design and, therefore, will not be further described.

In order to a pipcin, the barrel 4 and cause it to rotate therewith: th novel;

chuck, designated generally'by' the. letter- A,

" is secured to the rearend of the barrels; 1

" 'The chuck A comprises a main'cylindrical or ring-like body portion or housing lt") which is secured by bolts 16to the flange 17 on the rear end er the barrel 4.

cry or face of the cam-ringlS i's'provided Q A cam-ring 18 is mounted within the body portion 15 and is keyed thereto by, a*key 19 so as to prevent rotation. ofthe ring 18 1 relative to the body 15. The inner, periph v a with a' plurality ofcam-plates othard- A'roller retaining ring, 21 is mounted with n the cam-ring 18 and', has an .out-

' wardly extending flange portion 22 overlyingtheflrear side face of the cam-ring 18;

An actuator-ring 23 is mounted around a projecting'ring' portion 24 of the body 15 a v and has an inwardly extending flange portion 25 which is keyed at 26 to the fiange-22 of the roller 'retaining ring 21.

The roller retain ng rlng 21 with a plurality of'outWardly'flaring for tapered slots or pockets 27' in which are mounted the pipe gripping rollers 28 which 's provided have a slightly 'greaterzdianieter than the inner ends of the slotsso asto permit the rollers 'to project througlrsaid slots to en;

gagejthe pipe orjwork-piece and yet prevent their moving entirely out ot'the slots] The cani plates 20 are adapted to forrn bearing. surfaces forthe rollers 28 and to i force the rollers into engagement with tllenioved clockwise "relative tothe rollernetzunlng rlng '21.

The outer periphery of theijactuator-rii g 23 is providedwithjteeth 3.01 adapted to be in mesh with pinions 31 and 32.journaled on- .shafts of aX1es' ar1d 34', L.respectively,

mounted in the body or housing L The housing '15 is recessed. atrd'lan etrie cally oppo site points as at '35 and 36 to provide a space to receiveth'e pinions 31 and 32 v and toalso receive rack-'blocks'orsegments 37 and 38;

The rack-hlock 37 isslidably inountedjin the'recess 35 andjh'as itsrackor toothed face 39. in mesh w th the. Pinion '31.-

T11erack-b1oc1r38 is slidably mafia-ed in the recess 36and has itslack or roothedf e i Z '40 in mesh with a pinion41 journaled on pinion 32.

an axle or shaft 42 and meshed with the I The blocks or "segments 37 and 38 are recessed for, slotted to receive stop-blocks and 44, respectively, which are movable -1n the recesses and are held in normal position by compression springs 45 and 46, respectively. The springs 45 and 46 provide an c The blocks 43 and 44 are adapted to be elastic resistance to the movement of the blocks 43 and 44 in their respective recesses.

engaged by tripping-bars or stops to be described. v r i f,

(lam shoes 48 and 49 are mounted on'the .periphery ofthe chuck adjacent the blocks '43 and 44 so. that the tripping-bars will be automatically disengaged after a predetermined travel of the chuck suflicient to discngaget herollers 28 from the work.

' The actuating ring 23, axles-or shafts 33, 34 and-42, pinions31, 32, and 41, slidingrack blocks orF-iegmcnts, 37 and 38, and.

blocks 43 and 44, are held in place and in proper relation to each other by a cover- P12113001 cap 50 which is: bolted to the housing 15. i i

Q;The cam-ring 18 and roller retaining ring I v21 are held in place by a keeper-ring 51 extending inwardly from and bolted to the cover-plate 50, r i

I In order to yieldabl-yholdthe chuck in its a open positionapin 52 is mounted in a recess The base 2 of the machine extended 53 in the housingand pressed outwardly toward the cover-plate by a spring 53,

.so as to enter a.hole 54in the cover-plate vvwhen the chuck '18 open.

.rearwardly to form a bracket 55 on which is mounted a triphousing or body 56 which may be secured thereto in any manner .Trips57 and 58 are slidably mounted. in -op'enings formed in the body 56 and are adaPtBd to. b Projected/into path of the blocks 43 and 44 and doubleended can shoes 48 and 49. The trips'57 and 58 are of likeformation and are disposed side by side.

The trip 57 is adapted to be projectedxinto the path of the cam-shoe 48 and the block .43; The trip 58 is adapted to be projected ,into the' path of cam-shoe 49 and the block 44. The trips 57 and 58 are normally acted upon by means of expansible helical springs '59 which abutat their" upper ends against the, lower ends of the trips and engage a p s ason their lower ends, such bracket pass through the sprin y andengageithe respective trips 57 and-58f A pair of nuts 62 are mounted upon the being securedEat its upper end to the body lower ends of thepins 61 andpermitof ad.- justing the trips. To, deaden the noise incident to engagement of the nuts 62. with the :bracket 60, a plurality of washers 63 are mounted upon the pins 61', the outer ones of the lock-bolts.

in one direction brings one end of the cam" the washers being composed of leatheror other sound deadening material.

Thetrips 57 and 58 are held' in lowered 7 position against the tension of the springs 59 by meansof lock-bolts 65 which are slidably mounted in the body56 to slide in a direction at right angles to the movements of the trips 57 and 58. Each of the lock-.

bolts 65 is formed with a depending portion 66 at its outer end and this depending portion is utilized to receive a-pin 67 and to form a shoulder or abutment; to be engagedby meansof a cam 68.

' The pins 67 extend through openings;

formed in a eap plate 69 secured'tothe body 5e; "Expansible helical sp 70 are mounted. upon the pins ,67 and are confined between the cap -plate 69 and the outer ends of the lock-bolts 65 and normallytend to'press the boltsinward into engagement with the trips.

trip is held depressed against the tension of the spring 59.

of the trips is formed inthe sidewith a notch 71 to receive the inner end of the cooperating lock-bolt 65 whereby the In order to operatethe lock-bolts- 65 to.

ieflectthe release of the trips, a spindle 72 is mounted in the body 56 and is provided at itslower end with the cam or cross-head 68 and at its upper end withthe arm 74.

i The ends of cross-head o'r cam 68 are adapt- I ed to engage the depending portions 66 of Rotation of the spindle72 or cross-head 68 intoengagement with the depending portion of one of the locl'c-bolts thereby releasing one ofthe trips, while rotation of the spindle in the reverse direction will bring the other end of the cam or crosshead 68 into engagement with the depending portion of the other lock-bolt.

For convenience of operating the spindle I:

72 a link' 75 connectsthe outer end of the arm 74 with a lever 76 conveniently disposed;

tofbe operated by the operator at a point dlstant from the chuck.

I In operation, the pipe or other article is, mounted in the barrel 4 and chuckA, and

the machine i caused to operate to rotate the barrel 4 in a clockwise direction. The} operator will then operate the lever 76 to v release the trip wardly into the path ofthe block 44. As

-. soon as the block 44 comes in contact with the trip 58, it will stop and the segment 38' will'be'retarded- -,,As the pinions 41 and 32" are carried forward they will rotate on their axles,'a'nd the actuating ring 23 and'roller held stationary only until the trip 58 is depressed by the'cam-shoe 49. Should the- 58 which is projected up-" as' t'he block 43 engages the trip 57 it will stop and the segment '87 will be retarded. As the pinion 31 is carried forward'it' will rotate on its axle and the actuating ring 23 and roller retaining ring 21 will rotate with reference to the cam-ring 18 so as to release the rollers 28; i

In Figures 7 and 8 we have shown a plan and section of a slightly modified form of chuck in which lever mechanism is sub{ stituted for the rack and pinion operating mechanism-above described.

" 'Alever 78 has an articulated connection at one end with the block 43 and is pivoted at" its other end to a shaft 79 mounted in the chuck housing 15. A second lever 80 1 has an articulated connection at one end with the actuating ring '23 and is pivoted intermediate its ends to a shaft 81 and has its free end pivotally connected to a connecting rod 82, the other end of which is pivotally connected to the lever 78 intermediate its ends. The connecting rod 82 is composed of two telescoping parts normally held extended by a coiled spring 83. Torsion springs 84 and 85 are connected to each of the-levers 78 and 80 to urgethem into normal. position.

When the trip 57 is released to engage .the block 43, the levers 78 and 80 and con-.

necting rod Will cooperate to rotate the actua-ting ring 23, and roller retaining ring 21 will rotate relative to the cam-ring 18 so as to release the rollers 28. I

A lever 85 has an articulated connection at one endwith the block 44: and is pivoted atits other end to a shaft 86 mounted in the chuck housing- 15. A second lever 87 has an articulated connection at one end with the actuating ring'23 and is pivoted at its other end to a shaft 88 mounted in the chuck housing 15. 'A connecting rod 89 is pivotally connected at its opposite ends to points intermediate the ends of the levers 85 and 87. The connecting rod 89 is composed of two telescoping parts normally held extended by a coiled spring 90. Torsion springs 91 and 92 are connected to each of the levers 8 5 and 87 to urge them into normal' position.

When the trip 58 is released to engage the block 44, the levers 85 and 87 and connectingrod 89 will cooperate to'hold the actuating ring 28 and roller retaining ing 21 stationary, while the cam-ring 18wil1 revolve with the chuck-body and force the rollers 28 into engagement with the work-piece.

While wehave shown and'fdescribedticerg tain' specific embodiments of our invention,

it will 'beiinderstood that We do not Wish to be limited "thereto since various modificationsmay be madewithout departing 1 mm the scope of our invention as defined in'the appended claims.

life I claim:

1. The combination with. a pipe-working machine or the like having a positively robated barrel, of a chuck comprisinga. main body portion secured to and adapted to retate' with said barrel, a cam-ring removably secured to and adapted to rotate with said body portion, a roller retaining ring mounted within said cam-ring and adapted to move relative thereto, said roller retain ing ring being provided with a plurality of transverse slots, a plurality of roller-j aw members mounted in said slots, "cam-faces on said cam-ring adapted to engage and control the movement of'said'j'aws relative I thereby permit said roller-jaws to' move from the work, and selective. means con trollable from "a. point remote from saidchuck for operating either vor the above mentioned means.

2. The combination with a pipe-working machine or the like having a positively -roto the, work, means for holding said roller- I ice tated barrel, of a chuck comprising a main body portion secured to and adapted to Totate with said barrel, a cam-ringremovably secured to and adapted to rotate with said body portion, a roller retaining ring mounted within said cam-ring and adapted to moverelativethereto, said roller retaining ring being provided with a plurality of transverse slots, a plurality of rollerjaw members mounted in said-slots, cam- "faces on said cam-ring adapted to engage andcontrol the movement of said jawsrelative to-the work, a toothed ring mounted around said roller retaining ring and secured thereto, a pinion mounted onsaid body portion and ,in meshwith said. toothed ring, a

segmental rack mounted fonsliding movement relative to said body portion, a second'pinion mounted on said body portion and in" mesh with said rack andsaid first named pinion, said rack being adapted to be held stationary while said chuck body and pinionsare'moved relative thereto, whereby I said toothed ring: and roller-jaw retaining ring-are held stationary while said cam-ring is rotatedlrelative thereto thus causing said fcam-faeestoforce said roller-jaws against the work, a second segmental rack, a pinion mounted on said body portion and in mesh i with as rack and said toothed iinggsaia last-named rack being also adapted to be held stationary while said chuck body and last named pinion are moved relative thereto, whereby said toothed ring and roller-Jaw retaining ring :are caused to move relative to said cam-ring in the. direction of rotation of said cam-ring to thereby move said-camface's away from said roller-jaws and release the work.

"3. The combination with a pipe-working machine or the like having a positively rotated bar1el,gof.a chuck compris ng a main body'portion secured to and adapted to rotate with said barrel, a cam-ring removably secured to and-adapted. 'to rotate with said body portion, a roller retaining ring mounted withinsaid cam-ring and adapted to move relative thereto, said roller retain-- ing ring being provided with a plurality of transverse slots, a plurality of rollerqaw members mounted in said slots, cam-faces on said cam-ring adapted to engage and control the movement of-isaid jaws relative to the work, a toothed ring mounted around said roller retaining ring and secured thereto,

pinion mounted on said body portion and in mesh with said toothed ring, a segmental rack mounted for slldmg movement relative to said body portion, a second pinion mounted on said body portion and in mesh with said rack and 'saidfirst named pinion,

said rack being adapted to be held stationary while said chuck body and pinions are moved relative thereto, whereby said toothed ring and roller-jaw retainingring are held stationary while said cam-ring is rotated rela tive thereto thus causing said cam faces to force said roller jaws against the work, a

second segmental rack, a pinion mounted on sald body -portion and 1n mesh w th sa d rack and said toothed ring, said last named rack also being adapted to be heldstationa ry while said chuck body and last named pinion are moved relativethereto,v whereby said toothed ring and roller-jaw retaining ringare caused tomove relative to said camringin the direction of rotation of said camring to'thereby move said cam-faces away from said I'OllGf-JZLWS and release the work, and means controllable from a point remote from saidchuck for holding either of said racks stationary.

4:."The combination with a pipe-working machine or 1 the like having a positively rotatedbarrel, of a chuckcomprisinga main body portion secured-to and adapted to ro-' tate with said barrel, a cam-ring removably secured to and adapted to rotate with said body, portion, a roller retaining ring mountedwithinsaid cam ring and adapted to move relative thereto, said roller retainfing ring being provided with a plurality of transverse slots, a plurality of roller-jaw members mounted in sa1dslots, cam-faceson said cam-ring adapted to engage and. control the movement of said jaws relative to the work, a toothed ring'mounted around said roller retaining ring and secured the reto,-v a pinion mounted on said body portion and in mesh with said toothed ring, a. segmental rack mounted. for sliding movement relative to said body portion, asecond pinion mounted on'said body portion and in mesh with said rack and said first named pinion, said'rack being adapted to be held stationary while said chuck body and pinions are moved relative thereto, whereby said toothed ring and roller-jaw retaining ring are held stationary while said cam-ring is rotated," relative thereto" thus causing said cam i'aces to force said roller aws against the work, asecondsegmental rack,-a pinion mounted onvsaid body portion and in mesh with said rack and said toothed ring, said last named rack being alsoadapted. to be held stationary while said chuck body and last named pinion are moved relative thereto, whereby said toothedring and roller-jaw retaining ring are caused ,to move relative to said cam-ring inthe direction of rotation.

of said cam-ring to thereby move said camtaces "away from said rolleraws and re lease the work, and selective means control lable from a point remote from said chuck tor holding either of, said racks stationary. ;5. The combination with a pipe-working .machine'or the like having a. positively rotated barrel, of a chuck comprising-a main body portion secured to and adapted to rotate with said barrel, a cam-ring .removably secured to and adapted to rotate with said body portion, a roller retaining ring mountedwithin said cam-ring and adapted to move relative thereto, said roller retaining ring being provided witha'plurality of transverse slots, .a plurality of roller-jaw members mounted in said slots, cam-faces on said cam ring adapted to engage andcontrol the movement of said jaws relative to the work, a toothed ring mounted around said rollerretaining ring and secured thereto, a

pinion mounted on. said body'portion and in mesh with said toothed ring,a segmental rack mounted for sliding movementrelative to said body portion, a: second pinion mounted on-sald body portion and in mesh with said rack and said first named pinion,

6. The combination with a pipe-working -machine or the like having apositively rotated barrel, of a. chuck comprising ama'in to move relative thereto,'said roller retain-' ing ring being provided with a plurality of transverse slots, a plurality of rollerjaw members mounted in said slots, cam-faces control the movement of said jaws relative to the work, a toothed ring-mounted around said roller retaining ring and secured thereto, a pinion mounted on said body portion and in mesh with said toothed ring, a segmental rack mounted for sliding movement relative to said body portion, a second pinion mountedon said body portion and in mesh with said rack and said first named pinion a spring-cushioned contact block mounted in said rack, means adapted to engage said block-to hold said rack stationary while said chuck body and pinions are moved relative thereto, whereby said toothed ring and roller-jaw retaining ring are held stative thereto thus causing said cam-faces to tionary while said cam-ring is rotated relaon said cam-ring adapted to engage and force said roller-jaws against the-Work,and

means for releasing the roller-jaws.

In witness whereof, we have hereunto signed our names.

I JOSEPH BAINES.

JACOB P. BOSLE. 

